One thing that we have purposely avoided is "Advance Sign Ups". This is how the Friends of the C&TS manage their equally impressive work sessions - anyone attending must sign up in advance for the crew and project that they want to work with. You can't just "show up" like we do. (Oh, and you have to pay to be a "volunteer".) If there is insufficient crew/interest before the signup deadline, the project doesn't happen.
There are definite advantages to this approach, but it would also require a bunch more coordination before the work weekend, including finding crew leaders, etc. I'm also not a fan of enforcing advance sign ups and not allowing walkup help. Those aspects are part of what make the WW&F Work Weekends so special and inviting for new volunteers.
FWW 2019 had one goal - lay track to 218. This had a few smaller sub-groups, but the entire crew was (more or less) assigned to that project (or to support it by running trains, cooking food, managing visitors, etc.) Spring 2020 will likely have a similar singular goal - ballast, line, tamp all that track. Unfortunately, tamping will be greatly constrained by the limitations of our current tamper. (The rumored acquisition of another tamper has apparently fallen through, by no fault of our own.)
After Spring 2020, we may be better served to try a more project-based approach.
Good discussion!